This document provides an overview of the history and evolution of rock and roll music from the late 1940s through the 1960s. It describes how rock grew out of genres like rhythm and blues, blues, and jazz that were popular with black audiences. Early influential artists included Chuck Berry, Little Richard, and Elvis Presley. The 1960s saw the rise of folk rock pioneered by Bob Dylan, psychedelic rock, and the British Invasion led by The Beatles. Other major developments included surf rock associated with California bands like The Beach Boys. Overall, the document traces how rock and roll mirrored and commented on social and political changes occurring during this transformative period.